Door lock structure for microwave digestion instrument

Abstract

A door lock structure for a microwave digestion instrument relates to the technical field of machinery, and comprises a door lock support fixed on the microwave digestion instrument, a steering engine is fixed on the door lock support, the door lock support comprises a vertical guide groove, a door lock movable plate capable of sliding up and down along the guide groove is arranged in the guide groove, a push rod and a bolt are fixed on the door lock movable plate, and the push rod and the bolt are fixed on the door lock movable plate. An upper baffle plate and a lower baffle plate which are vertically opposite are fixed on the door bolt, the push rod upwards extends to the upper surface of the microwave digestion instrument, a crankshaft is arranged on the steering engine, an output shaft of the steering engine is horizontally arranged, one end of the crankshaft is fixed on the output shaft of the steering engine, and the other end of the crankshaft is arranged between the upper baffle plate and the lower baffle plate. The door lock structure for the microwave digestion instrument provided by the utility model is low in energy consumption and high in safety.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a door lock device of a microwave digestion instrument, in particular to a door lock structure used for a microwave digestion instrument. Background Art

[0002] Microwave heating technology is widely used in sample pretreatment solutions, but microwaves are electromagnetic waves with electromagnetic radiation. If leaked, they will cause harm to the human body and electromagnetic interference to other nearby equipment. At the same time, microwave digestion tanks are mostly in a state of high temperature and high pressure in the microwave oven cavity, and the impact force of an accidental explosion is very large. Therefore, having a stable and reliable microwave oven cavity door lock will greatly improve the safety factor of microwave digestion.

[0003] The door lock of the existing microwave digestion instrument adopts an electromagnet structure. After the electromagnet on the door panel is energized, the magnetic force generated by it adsorbs the iron door bolt fixed on the door lock movable plate or pulls the door bolt into the door lock to achieve self-locking of the furnace door; however, the electromagnet needs to remain energized and attracted for a long time when locking the door lock, so the electromagnet will generate heat, which is likely to cause adverse effects on surrounding components;

[0004] Secondly, the electromagnet needs to fit tightly with the bolt, and the bolt surface cannot be sprayed, otherwise it will affect the suction of the electromagnet. In the use environment of the microwave digestion instrument, there will be a lot of acid mist. The bolt without surface spraying is prone to rust, which will affect the stability of the electromagnet's attraction.

[0005] When the microwave digester loses power abnormally, the electromagnet will lose its adsorption force. If the inside of the machine is in a state of high temperature and high pressure at this time, there will be safety hazards. Utility Model Content

[0006] In view of the defects existing in the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a door lock structure for a microwave digestion instrument which can realize locking and unlocking functions in both power-on or power-off states, has low energy consumption and high safety.

[0007] In order to solve the above technical problems, the utility model provides a door lock structure for a microwave digestion instrument, which is characterized by:

[0008] It comprises a door lock bracket fixed on the microwave digestion instrument, a steering gear is fixed on the door lock bracket, the door lock bracket comprises a vertical guide groove, a door lock movable plate which can slide up and down along the guide groove is arranged in the guide groove, a door hook opening for a door hook on the cavity door of the microwave digestion instrument to pass through is opened on the door lock bracket and the door lock movable plate, a push rod and a door bolt are fixed on the door lock movable plate, an upper baffle plate and a lower baffle plate which are directly opposite to each other are fixed on the door bolt, and the push rod extends upward to the upper surface of the microwave digestion instrument;

[0009] The steering gear is provided with a crankshaft, the output shaft of the steering gear is arranged horizontally, one end of the crankshaft is fixed on the output shaft of the steering gear, and the other end of the crankshaft is arranged between the upper baffle plate and the lower baffle plate.

[0010] Furthermore, a pressing handle is fixed to the upper end of the push rod.

[0011] The door lock structure for a microwave digestion instrument provided by the utility model utilizes a steering gear to control the upward and downward movement of a door lock movable plate to achieve locking and unlocking of the door lock. Compared with the electromagnet structure adopted in the prior art, the structure is energized only when the steering gear is running, generates less heat, and after power failure, the structure can only be manually unlocked by a push rod, so the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of an embodiment of a door lock structure for a microwave digestion instrument of the utility model;

[0013] Figure 2 It is a partial enlarged view of an embodiment of the door lock structure for a microwave digestion instrument of the utility model. DETAILED DESCRIPTION

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments are not intended to limit the utility model. All similar structures and similar variations of the utility model should be included in the protection scope of the utility model. The semicolons in the utility model all represent the relationship of and.

[0015] like Figure 1-Figure 2 As shown, a door lock structure for a microwave digestion instrument provided by an embodiment of the utility model;

[0016] The invention comprises a door lock bracket 1 fixed on the microwave digestion instrument, a steering gear 3 is fixed on the door lock bracket 1, the door lock bracket 1 comprises a vertical guide groove, a door lock movable plate 2 which can slide up and down along the guide groove is arranged in the guide groove, a door hook opening 4 for a door hook (not shown) on the cavity door of the microwave digestion instrument to pass through is opened on the door lock bracket 1 and the door lock movable plate 2, a push rod 6 and a door bolt are fixed on the door lock movable plate 2, an upper baffle plate 51 and a lower baffle plate 52 which are opposite to each other up and down are fixed on the door bolt, and the push rod 6 extends upward to the upper surface of the microwave digestion instrument;

[0017] The steering gear 3 is provided with a crankshaft 31 , the output shaft of the steering gear is arranged horizontally, one end of the crankshaft 31 is fixed on the output shaft of the steering gear, and the other end of the crankshaft 31 is arranged between the upper baffle 51 and the lower baffle 52 .

[0018] In the embodiment of the utility model, a pressing handle 7 is fixed to the upper end of the push rod.

[0019] The method of using this embodiment is as follows:

[0020] In the initial state, the crankshaft 31 abuts against the lower end of the baffle plate 51 on the door bolt, the lower end of the door hook opening 4 on the door lock movable plate 2 abuts against the lower end of the door hook, and the cavity door of the microwave digestion instrument is in a locked state.

[0021] When in use, the steering gear 3 is driven to make the crankshaft 31 rotate counterclockwise around the output shaft of the steering gear 3. After the crankshaft 31 rotates to abut against the lower baffle plate 52 of the door bolt, the door lock movable plate 2 is pushed to move horizontally downward. After the door lock movable plate 2 moves horizontally until the door hook opening 4 on it is aligned with the door hook opening 4 of the door lock bracket 1, the cavity door is pulled outward to make the door hook disengage from the door hook opening 4, thus completing the unlocking.

[0022] When the chamber door needs to be locked, the chamber door is pushed back so that the door hook passes through the door hook opening 4 until the chamber door fits with the microwave digestion instrument body. At this time, the steering gear 3 is driven to make the crankshaft 31 rotate clockwise around the output shaft of the steering gear 3. After the crankshaft 31 rotates until it abuts against the upper baffle plate 51 of the door bolt, the door lock movable plate 2 is pushed to translate upward to complete the locking.

[0023] When the microwave digester is powered off in the locked state, the servo 3 stops working so that the crankshaft 31 remains at the top dead center in the locked state. At this time, the door hook of the chamber door is still locked by the door lock movable plate 2 so that the chamber door cannot be opened. The pressing handle 7 on the upper surface of the microwave digester is used to push the door lock movable plate 2 and the crankshaft 31 to move downward, so that the door hook is disengaged from the door hook opening 4 to complete the unlocking.

Claims

1. A door lock structure for a microwave digestion instrument, characterized in that: The invention comprises a door lock bracket (1) fixed on a microwave digestion instrument, a steering gear (3) being fixed on the door lock bracket (1), the door lock bracket (1) comprising a vertical guide groove, a door lock movable plate (2) being provided in the guide groove and being capable of sliding up and down along the guide groove, a door hook opening (4) being provided on the door lock bracket (1) and the door lock movable plate (2) for a door hook on a cavity door of the microwave digestion instrument to pass through, a push rod (6) and a door bolt being fixed on the door lock movable plate (2), an upper baffle plate (51) and a lower baffle plate (52) being fixed on the door bolt and being opposite to each other up and down, and the push rod (6) extending upward to the upper surface of the microwave digestion instrument; The steering gear (3) is provided with a crankshaft (31), the output shaft of the steering gear is arranged horizontally, one end of the crankshaft (31) is fixed on the output shaft of the steering gear, and the other end of the crankshaft (31) is arranged between an upper baffle plate (51) and a lower baffle plate (52).

2. The door lock structure for a microwave digestion instrument according to claim 1, characterized in that: A pressing handle (7) is fixed to the upper end of the push rod.

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